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/**

 * @file

 * @short This file is included by qdatetimefns_p.h.

 * If you need includes in this file, put them in qdatetimefns_p.h, outside of the namespace.

 */

template<typename TSubClass>

Item ExtractFromDurationFN<TSubClass>::evaluateSingleton(const DynamicContext::Ptr &context) const

{

    const Item item(m_operands.first()->evaluateSingleton(context));

    if(item)

    {

        return static_cast<const TSubClass *>(this)->

               extract(item.as<AbstractDuration>());

    }

    else

        return Item();

}

Item YearsFromDurationFN::extract(const AbstractDuration *const duration) const

{

    return Integer::fromValue(duration->years() * (duration->isPositive() ? 1 : -1));

}

Item MonthsFromDurationFN::extract(const AbstractDuration *const duration) const

{

    return Integer::fromValue(duration->months() * (duration->isPositive() ? 1 : -1));

}

Item DaysFromDurationFN::extract(const AbstractDuration *const duration) const

{

    return Integer::fromValue(duration->days() * (duration->isPositive() ? 1 : -1));

}

Item HoursFromDurationFN::extract(const AbstractDuration *const duration) const

{

    return Integer::fromValue(duration->hours() * (duration->isPositive() ? 1 : -1));

}

Item MinutesFromDurationFN::extract(const AbstractDuration *const duration) const

{

    return Integer::fromValue(duration->minutes() * (duration->isPositive() ? 1 : -1));

}

Item SecondsFromDurationFN::extract(const AbstractDuration *const duration) const

{

    return toItem(Decimal::fromValue((duration->seconds() + duration->mseconds() / 1000.0) *

                                     (duration->isPositive() ? 1 : -1)));

}

template<typename TSubClass>

Item ExtractFromDateTimeFN<TSubClass>::evaluateSingleton(const DynamicContext::Ptr &context) const

{

    const Item item(m_operands.first()->evaluateSingleton(context));

    if(item)

    {

        return static_cast<const TSubClass *>(this)->

               extract(item.as<AbstractDateTime>()->toDateTime());

    }

    else

        return Item();

}

Item YearFromAbstractDateTimeFN::extract(const QDateTime &dt) const

{

    return Integer::fromValue(dt.date().year());

}

Item DayFromAbstractDateTimeFN::extract(const QDateTime &dt) const

{

    return Integer::fromValue(dt.date().day());

}

Item MinutesFromAbstractDateTimeFN::extract(const QDateTime &dt) const

{

    return Integer::fromValue(dt.time().minute());

}

Item SecondsFromAbstractDateTimeFN::extract(const QDateTime &dt) const

{

    const QTime time(dt.time());

    return toItem(Decimal::fromValue(time.second() + time.msec() / 1000.0));

}

Item TimezoneFromAbstractDateTimeFN::extract(const QDateTime &dt) const

{

    if(dt.timeSpec() == Qt::UTC)

        return toItem(CommonValues::DayTimeDurationZero);

    else if(dt.timeSpec() == Qt::OffsetFromUTC)

        return toItem(DayTimeDuration::fromSeconds(dt.utcOffset()));

    else

        return Item();

}

Item MonthFromAbstractDateTimeFN::extract(const QDateTime &dt) const

{

    return Integer::fromValue(dt.date().month());

}

Item HoursFromAbstractDateTimeFN::extract(const QDateTime &dt) const

{

    return Integer::fromValue(dt.time().hour());

}